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Monolithic Power Systems Inc. MPQ3432GLE-AEC1-P
- Part No.:
- MPQ3432GLE-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 13-PowerVFQFN
- Datasheet:
-
MPQ3432GLE-AEC1-P.pdf
- Description:
- IC REG BOOST ADJ 3A 13QFN
- Quantity:
- Payment:
- Shipping:
Inventory:479
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Product details
Overview
MPQ3432GLE-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified, fully integrated synchronous boost converter with configurable peak current limit, operating from 0.8V to 13V input and delivering up to 16V output at 21A peak switch current. It integrates 6mΩ low-side and 9.5mΩ high-side MOSFETs, uses adaptive constant-off-time (COT) control for fast transient response, and supports automotive backup battery and supercapacitor boost applications.
For engineers reviewing the MPQ3432GLE-AEC1-P datasheet, MPQ3432GLE-AEC1-P pinout, MPQ3432GLE-AEC1-P application, or MPQ3432GLE-AEC1-P equivalent, this page delivers verified technical context, validated pin functions, real-world load-regulation performance across PSM/FCCM/USM modes, and precise design-meaning specifications for automotive-grade power architecture validation.
Technical Context
The MPQ3432 employs adaptive COT control with internal transconductance error amplifier (GEA = 410 μA/V, AV-EA = 300 V/V) and 0.99–1.01V reference voltage (VREF), enabling sub-65μs EN-to-switching startup and stable regulation under wide VIN/VOUT ratios. Its MODE pin directly selects between FCCM (>1.6V), USM (0.9–1.2V or floating), and PSM (<0.7V), each altering inductor current behavior-FCCM maintains fixed 600kHz switching with bidirectional inductor current, while PSM enters DCM and enables automatic pass-through when VIN approaches VOUT−SET.
Protection is implemented via cycle-by-cycle peak current limiting (set by ILIM resistor), 175°C thermal shutdown with 25°C hysteresis, programmable input UVLO (via EN pin bias), and output overvoltage protection at 16.5V. The integrated BST capacitor circuit powers the HS-FET gate, eliminating external bootstrap diodes, and the dual ground separation (AGND/PGND) ensures noise-immune feedback sensing and high-current return path integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.8V to 13V - supports single-cell Li-ion start-up (2.7V min VST) and direct connection to 12V automotive rail without pre-regulation. |
| Output Voltage | Up to 16V - programmable via FB resistor divider; enables 9V/3A (20W avg) or 12V/3.3A (40W peak) delivery from 3.3V input. |
| Switching Frequency | 600kHz fixed - enables compact magnetics (e.g., 2.8μH inductor) and reduces EMI fundamental below AM band. |
| Peak Switch Current Limit | Configurable 7–11A via ILIM resistor - provides accurate overload protection without external sense resistor or IC. |
| Efficiency | 95% @ 3.6VIN→9V/3A - achieved by integrated 6mΩ/9.5mΩ MOSFETs and synchronous rectification eliminating Schottky loss. |
| Thermal Protection | 175°C shutdown with 25°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
| Operating Temperature | −40°C to +125°C junction - meets AEC-Q100 Grade 1 requirements for under-hood automotive electronics. |
Pinout & Package
MPQ3432GLE-AEC1-P is housed in a wettable-flank QFN-13 package (3mm × 4mm, 0.5mm pitch), optimized for automated optical inspection (AOI) and thermal performance in automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Power switch node | Connects to inductor; carries full switching current; shared drain-source path of internal LS-FET and HS-FET. |
| 2 VDD | Bias supply input | Internally regulated from VIN or VOUT; powers control logic; requires 4.7μF local decoupling for stability. |
| 3 SS | Soft-start timing | Capacitor-to-AGND sets VOUT ramp rate; prevents inrush current during power-up. |
| 4 COMP | Error amplifier output | Drives external RC compensation network; determines loop bandwidth and phase margin. |
| 5 FB | Voltage feedback input | Senses output via resistor divider; references 1.0V internal VREF for precision regulation (±1.5% over temp). |
| 6 AGND | Analog ground | Reference for FB, COMP, and internal references; must be separated from PGND to avoid noise coupling. |
| 7 PGND | Power ground | High-current return path for LS-FET and inductor; connects to thermal pad for heatsinking. |
| 8 VOUT | Boost output | Delivers regulated output; powers VDD when VOUT > VIN and VIN < 3.4V; connects to output capacitor bank. |
| 9 ILIM | Current limit setting | Resistor-to-AGND configures peak switch current (7–11A); enables precise short-circuit protection tuning. |
| 10 MODE | Light-load mode select | Logic level selects PSM (low), FCCM (high), or USM (floating/0.9–1.2V); determines efficiency/noise trade-off. |
| 11 EN | Enable control | Active-high enable with 1.23V threshold; also configures VIN UVLO hysteresis when biased externally. |
| 12 VIN | Main input supply | Primary power source; bypassed locally; supports 0.8V–13V operation with 2.7V start-up capability. |
| 13 BST | Bootstrap supply | Capacitor between BST and SW supplies HS-FET gate drive; eliminates need for external bootstrap diode. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive COT control | Enables <65μs startup and <10μs load-step response without external compensation components. |
| Triple light-load mode selection | FCCM (fixed 600kHz), PSM (audible-noise-prone but highest light-load efficiency), USM (≥23kHz forced minimum frequency). |
| Automatic pass-through function | HS-FET remains on and LS-FET off when VIN ≥ VOUT−SET, eliminating body-diode conduction loss and improving efficiency at high input. |
| Integrated dual MOSFETs | 6mΩ LS-FET + 9.5mΩ HS-FET reduce conduction loss and eliminate external Schottky diode and gate driver. |
| Configurable UVLO and OTP | EN pin bias sets VIN UVLO threshold; 175°C thermal shutdown with 25°C hysteresis ensures robust overtemperature recovery. |
Applications
| Automotive Start-Stop Backup Supply | Supercapacitor Energy Buffer |
|---|---|
|
Use Scenario: Powers infotainment and ADAS modules during engine cranking when battery voltage dips to 6V. IC Role / Device Role / Timing Role: Synchronous boost regulator maintaining 9V output from 6–12V battery rail with <10μs transient response. Use Value: Prevents system brownout using 21A peak current capability and automatic pass-through when VIN rises above regulated VOUT. |
Use Scenario: Charges 2.7V supercapacitor stack to 12V for emergency power hold-up in telematics units. IC Role / Device Role / Timing Role: High-efficiency step-up converter with programmable current limit (7–11A) for controlled capacitor charging. Use Value: Achieves 95% efficiency at 3.6V→9V/3A and supports 40W peak loads during rapid charge cycles. |
| 12V-to-16V Automotive Lighting Driver | ADAS Camera Power Rail |
|
Use Scenario: Supplies stable 16V to LED headlamp drivers from vehicle 12V system with cold-cranking tolerance. IC Role / Device Role / Timing Role: Fixed-frequency (600kHz) boost controller with OVP clamping at 16.5V and fast line regulation. Use Value: Maintains <±0.2% line regulation across 9–16V input and delivers clean output with <100mV ripple at 5A. |
Use Scenario: Generates isolated 5V/3A rail for high-speed image sensor and ISP in rear-view camera modules. IC Role / Device Role / Timing Role: Low-noise boost converter operating in ultrasonic mode (≥23kHz) to avoid audible coil whine. Use Value: Enables silent operation in cabin-facing cameras while sustaining 92% efficiency at 100mA–2A load range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61088RHLR | Non-AEC-Q100; 10A max switch current; no USM mode; requires external compensation. | Limited to industrial/commercial use; lacks automotive thermal and reliability qualification. | Select only for non-automotive designs where AEC-Q100 is not required and lower peak current suffices. |
| LM5122MQ/NOPB | Controller-only (external MOSFETs); 65V max VIN; no integrated current limit; requires complex loop compensation. | Supports higher input voltages but increases BOM count, layout complexity, and thermal management burden. | Choose when >13V input or >16V output is needed, and design team has expertise in external FET selection and compensation. |
Compared with TPS61088RHLR and LM5122MQ/NOPB, MPQ3432GLE-AEC1-P delivers AEC-Q100 compliance, integrated 21A-capable MOSFETs, USM noise suppression, and single-resistor current limit-reducing design risk, component count, and qualification effort for automotive boost systems.
Availability
MPQ3432GLE-AEC1-P is available at Aetrix Electronics and suitable for automotive start-stop systems, supercapacitor energy buffers, ADAS camera power rails, and 12V-to-16V lighting drivers requiring stable component supply with full AEC-Q100 traceability and long-term lifecycle support.
Supply support for MPQ3432GLE-AEC1-P includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs, with over two decades of leadership in DC/DC conversion, motor drivers, and automotive-grade solutions.
The MPQ3432 belongs to MPS's AEC-Q100-qualified automotive boost converter product line, engineered specifically for high-reliability, high-power-density applications in engine control units, infotainment systems, and ADAS modules.
FAQ
What is the minimum input voltage required to start up the MPQ3432GLE-AEC1-P?
The MPQ3432GLE-AEC1-P starts up from as low as 2.7V when no external VDD bias is applied. With VDD externally biased to ≥3V, startup is guaranteed down to 0.9V input. This enables operation during deep battery discharge in automotive systems while maintaining functional safety margins.
How does the MODE pin affect efficiency and noise performance?
The MODE pin selects between PSM (highest light-load efficiency but audible noise), FCCM (lowest ripple, fixed 600kHz, reduced efficiency at light loads), and USM (≥23kHz minimum frequency, silent operation, moderate efficiency). USM avoids coil whine while retaining >90% efficiency down to 100mA load.
Can the MPQ3432GLE-AEC1-P operate without an external bootstrap diode?
Yes. The BST pin uses an internal charge pump and requires only a capacitor between BST and SW pins. The integrated high-side MOSFET eliminates the need for an external Schottky diode, reducing component count, board area, and forward-voltage losses.
What is the purpose of the automatic pass-through function?
When VIN rises close to the regulated VOUT (within ~0.5V), the MPQ3432 automatically turns off the LS-FET and holds the HS-FET on, creating a low-loss linear path. This avoids body-diode conduction loss and improves efficiency by up to 8% at high input voltages, critical for automotive battery-sourced systems.
How is overvoltage protection implemented on the output?
The MPQ3432 includes internal output overvoltage protection (OVP) that triggers at 16.5V with 0.2V hysteresis. When exceeded, the device shuts down both MOSFETs and latches off until EN is cycled. This protects downstream 16V-rated loads such as LED drivers and camera sensors from destructive overvoltage events.
Is the ILIM pin compatible with standard resistor values for common current limits?
Yes. The ILIM pin accepts standard E96-series resistors: 36kΩ sets 9A peak current (typical), 44kΩ sets ~7.5A, and 24kΩ sets ~11A. These values align with common 1% thin-film resistors and enable precise, production-ready current-limit tuning without custom components.
Does the MPQ3432GLE-AEC1-P support parallel operation for higher current?
No. The MPQ3432GLE-AEC1-P does not include current-sharing or synchronization features. It is designed as a single-channel, self-contained solution. For >21A applications, designers must use discrete controllers with external MOSFETs or implement multiphase architectures with dedicated sync signals.
MPQ3432GLE-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 13-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.8V
- Voltage - Input (Max):
- 13V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 16V
- Current - Output:
- 3A
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 13-QFN (3x4)
MPQ3432GLE-AEC1-P FAQ
1.How can I place an order for MPQ3432GLE-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ3432GLE-AEC1-P on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MPQ3432GLE-AEC1-P reliable?
The price and inventory of MPQ3432GLE-AEC1-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ3432GLE-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ3432GLE-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ3432GLE-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ3432GLE-AEC1-P?
MPQ3432GLE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ3432GLE-AEC1-P order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MPQ3432GLE-AEC1-P?
For technical support, including MPQ3432GLE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ3432GLE-AEC1-P requirements.
6.How does Aetrix verify that MPQ3432GLE-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ3432GLE-AEC1-P products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MPQ3432GLE-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ3432GLE-AEC1-P?
All MPQ3432GLE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ3432GLE-AEC1-P, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MPQ3432GLE-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ3432GLE-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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